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Finding the Fourth Proportional to 167,690.26, 231,331.25 and 99,659.08

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Solution

The fourth proportional to 167,690.26, 231,331.25 and 99,659.08 is: 137,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,690.26 : 231,331.25 = 99,659.08 : x
  2. Step 2: Convert to fraction form
    167,690.26/231,331.25 = 99,659.08/x
  3. Step 3: Cross multiply
    167,690.26x = 231,331.25 × 99,659.08
  4. Step 4: Simplify right side
    167,690.26x = 23,054,257,895.30
  5. Step 5: Solve for x
    x = 23,054,257,895.30/167,690.26
  6. Step 6: Final answer
    x = 137,481.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.